Sound-reproducing record-disk.



No. 871,370. PATENTED NOV. 19, 1907. W. I. SHERWOOD.

SOUND REPRODUOING RECORD DISK.

APPLICATION FILED JAN. 3, 1907.

I 0 \\\\\\\\\'\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\Y c M r W/ vwentoz Witness UNITED. STATES PATENT OFFICE.

BROOKLYN, NEW YORK, A CORPORATION OF NEW YORK.

Specification of Letters Patent.

Patented Nov. 19, 1907.

Application filed January 3. 1907- Scrial No. 850 618.

To all whom it may] concern:

Be it known that 1., WILLIAM I. Sunnwoon, a citizen of the United States, residing at New York, borough of Manhattan, and State of New York, have invented certain new and useful Improvements in Sound-Reroducing Record-Disks, of which the folowing is; a s )ecification. My invention relates to improvements in sound reproducing record disks of talking machines, whether separate from or com bined with the turn table of the machine; and the objects of the invention are mainly toprovide a-serviceable, reliable and characterlstic record disk, and to improve the effects intended to be produced.

With these main ends in view, my invention consists of certain features of construction and combinations of parts to be hereinafter described and then claimed, with reference to the preferred form of the invention shown in the accompanying drawings, and in which Figure 1 is a plan view of my improved record disk, part broken away. Fig. 2 is a diametrical transverse section thereof. Fig. 3 is a perspective view of the peripheral ring of the disk detached. Fig. 4 is a transverse section of a turn table of a talking machine showing my improved disk resting thereon.

Referring to the drawings, the record disk a of a talkin or sound reproducing machine is shown as iaving applied to its ed e a eripheral ring or hoop b of material so ter than the disk to provide a friction surface. The material of the ring or hoop b is preferably rubber, having suflicient softness and resiliency to enable the ring to act in the nature of a cushion or pad. The body of the ring or hoop is shown as having a diameter which is greater than the thickness of the record disk, so that when the ring or hoop is ap lied to the edge of the disk, the same will bu e out or project from and beyond either su ace of the disk. of the ring or hoop b is provided with a continuous gIroove c to receive the edge of the disk a. n thls manner the ring or hoop is confined detachably upon the edge of the disk. 'The diameter of the elastic ring or hoop b, when removed from the disk, is preferably such that the distance between dia metrically opposite portions of the bottom of the groove 0 will be less than the diameter of the disk, so that it is necessary to stretch The inner periphery I the peripheral hoop or band upon and over the peripheral edge of the disk so as to enter said edge into the recess.

When a record disk is applied to a talking machine for the purpose of reproducing sound, it usually rests upon a turn table, such as d. In the present invention the record disk a, I), does not throughout rest u on the turn table, but the bulging or protru ing side portion of the ring or hoop b supports the record disk from the table.

Quite a number of advantages are incidental to my improvement, among which may be enumerated the following. Ihe turn table carries the disk around surely and effectivel by friction between the periphery of the disk and the ,table, thus overcoming slipping of the disk, or any movement of the disk out of time and irrespective of the speed to which the turn table is governed to run, thus assuring that the piece reproduced, if it be music, for instance, is at proper pitch. The side portion of the peripheral rin or hoop bulging or projecting beyond the p ane of the sound reproducing surface, forms a stop for the stylus, and prevents it from being thrown by centrifugal force oil the disk, as sometimes occurs, and interrupting the piece beingproduced. Also said bulging side portion of the ring or hoop forms an index or guiding line for starting the stylus. There is also the advantage of the cushioning effect, which particularly finds its usefulness when the sound reproducer is suddenly dropped upon the reproducing surface of the disk.

A great advantage ever present record disks, is that, through my improvement, disks are protected from each other in transit, in handling, in racking, etc., which tends tions of the disks, or to scratch the surface of the disk itself. The bulging side portions of the ring or hoop furnish a convenient hand-hold for grasping the record disk, especially in removing it from a rack and separating it from adjacent disks.

Record disks may conveniently be provided with rings or hoops'of different colors, whereby one disk may be readily distingulished from another, when in a rack or in a pi e.

Obviously the softer edgings ofthe disks may be permanently attached or applied, and they may be applied in a variety of WILLIAM I. SHERWOOD, OF NEW YORK, N. Y., ASSIGNOR TO PIIONOGRAPHIC MUSIC (30., OF I to injure the sound reproducing indentanys which will readily suggest themselves *to those skilled in the art.

What I claim as new and of my invention 1. A sound reproducing record disk having a peripheral ring of sott material softer than the rceord disk. I

2. A sound reproducing record disk having a soft peripheral ring reinovahly applied thereto'and heing softer than the reeord disk.

3. A sound reproducing record disk lmving a soft peripheral ring provided with at re eess 111 its inner periphery receiving the edge of the disk said ring being softer than the record disk. I 4. A sound re )roducing record disk lmvmg an edgin r soliter than the disk itself.

Signed'at r ew York, N. Y. this 28th din of Deeemher 1906. i

' \VILLIAM l. SHERWOOD. 'Wi tnesses:

Omvn B. KING, Gno. L. WilEnLoeK. 

